"No solution will ever be exactly perfect..."

No solution that only tweaks how corrupting curation can be profitably undertaken will. In that you are correct. However, code is infinitely mutable, and I have proposed mechanisms in reply to the OP here that do eliminate such corruption of curation as financial incentive, and replace that incentive with one to fund development via the SPS and @steemalliance.

Please take the time to set me straight on that proposal.

Thanks!